Pollucite and Ruby Physical Properties

Pollucite

Ruby

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Readily soluble in HF

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.86-2.943.97-4.05

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Conchoidal

1.6 Cleavage

None observed

No true cleavage

1.7 Mohs Hardness

6.5-79

2 10

1.8 Chemical Composition

(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

Al ₂ O ₃

Pollucite and Ruby Chemical Formula

While comparing Pollucite and Ruby physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Pollucite and Ruby chemical formula.

Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Ruby- Al ₂ O ₃

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Pollucite and Ruby Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pollucite and Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Ruby Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 3.97-4.05 whereas that of Ruby is 3.97-4.05.